Red Hat Bugzilla – Bug 1262284
Getting an Error after running `rbd-replay --read-only replay.bin`
Last modified: 2017-07-30 11:32:46 EDT
Created attachment 1072520 [details] librbd API script Description of problem: Getting an Error after running `rbd-replay --read-only replay.bin` Version-Release number of selected component (if applicable): 1.3.1 ceph version 0.94.2 How reproducible: 100% Steps to Reproduce: 0.mkdir -p ~/traces 1.lttng create -o traces librbd 2.lttng enable-event -u 'librbd:*' 3.lttng add-context -u -t pthread_id 4.lttng start 5.Ran the attached script (PFA) 6.lttng stop 7.rbd-replay-prep ~/traces/ust/uid/*/* replay.bin 8.rbd-replay --read-only replay.bin Actual results: After running rbd-replay command i am getting an Error. rbd-replay --read-only replay.bin Unable to create IoCtx: -2 I also tried to run: [root@hp-ms-01-c04 ~]# rbd-replay-prep ~/traces/ust/uid/0/64-bit/channel0_0 replay1.bin As it showed UST event librbd:* created in channel channel0 ============================================================================== [error] Unable to open trace directory "/root/traces/ust/uid/0/64-bit/channel0_0". [warning] [Context] Cannot open_trace of format ctf at path /root/traces/ust/uid/0/64-bit/channel0_0. rbd_replay/rbd-replay-prep.cc: In function 'void Processor::run(std::vector<std::basic_string<char> >)' thread 7fee3fbfa7c0 time 2015-09-11 06:49:00.214968 rbd_replay/rbd-replay-prep.cc: 189: FAILED assert(trace_handle >= 0) Assertion details: trace_handle = -1 ceph version 0.94.2 (5fb85614ca8f354284c713a2f9c610860720bbf3) 1: (ceph::__ceph_assertf_fail(char const*, char const*, int, char const*, char const*, ...)+0xeb) [0x41830b] 2: (Processor::run(std::vector<std::string, std::allocator<std::string> >)+0x86e) [0x417d6e] 3: (main()+0x26b) [0x40e71b] 4: (__libc_start_main()+0xf5) [0x7fee3e3c0af5] 5: rbd-replay-prep() [0x40eb41] NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this. terminate called after throwing an instance of 'ceph::FailedAssertion' Aborted ============================================================================ Expected results: I should not see any Error Additional info:
rbd-replay-prep just needs the base directory, not the channel file. This works: rbd-replay-prep ~/traces/ust/uid/0/64-bit replay.bin
For rbd-replay, it's trying to replay on the 'rbd' pool by default. You'll need to specify an existing pool with the images in it, i.e.: rbd-replay -p Tanay-RBD --read-only replay.bin
Added http://tracker.ceph.com/issues/13220 and http://tracker.ceph.com/issues/13221 for better error reporting.
Followed the Document and it worked as expected, hence marking this Bug as Verified. https://access.redhat.com/articles/1605163 rbd-replay works fine after specifying the pool name.
Since no code change took place, should this just be closed instead of flagged verified?
(In reply to Jason Dillaman from comment #7) > Since no code change took place, should this just be closed instead of > flagged verified? Great catch, thanks.